The carbon dioxide breathed out is a by-product of the process of cell respiration, as is water. In this process, energy is
produced in the mitochondria of cells
. This energy is our physical “life force”.
What is responsible for the attraction between water molecules and the glass sides of a graduated cylinder?
T or F;
Adhesion
is responsible for the attraction between and water molecules and the glass sides of a graduated cylinder.
Because
the oxygen atom has more protons (positives) than the hydrogen nuclei
, the shared electrons have a greater attraction to the oxygen nucleus & spend more time around it than they do around the hydrogen nuclei (unequal sharing of electrons).
Where do electrons spend most of their time in a water molecule?
Atoms of oxygen are electronegative and attract the shared electrons in their covalent bonds. Consequently the electrons in the water molecule spend slightly more time
around the oxygen atomic center
and less time around the hydrogen atomic centers.
What explains the negative charge on the oxygen atom within the water molecule?
In a water molecule, the oxygen atom and hydrogen atoms share electrons in covalent bonds, but the sharing is not equal. …
The unequal sharing of electrons
gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
What liquid has the lowest surface tension?
Hexane, C
6
H
14
, has the lowest surface tension of all the liquids given here. Hexane is a non-polar molecule, the only intermolecular forces acting between hexane molecules in the liquid will be the weakest of all the intermolecular forces, London forces (also known as dispersion forces).
What is responsible for causing the surface tension in water?
The surface tension arises due to
cohesive interactions between the molecules in the liquid
. At the bulk of the liquid, the molecules have neighboring molecules on each side. … As explained, the cohesive force between the molecules causes surface tension. The stronger the cohesive force, the stronger the surface tension.
Is oxygen negative or positive?
3.5 Alcohols and Phenols
The
oxygen atom is slightly negatively charged
, and the carbon and hydrogen atoms are slightly positively charged. The polar bonds of the hydroxyl group are responsible for the major reaction characteristics of alcohols and phenols.
How does hydrogen bond with oxygen?
Strong linkages—called
covalent bonds
—hold together the hydrogen (white) and oxygen (red) atoms of individual H
2
O molecules. Covalent bonds occur when two atoms—in this case oxygen and hydrogen—share electrons with each other.
Why does oxygen have an atomic number of 8?
On the periodic table of elements, oxygen is represented by the symbol O. It has an atomic number of 8
because it has 8 protons in its nucleus
.
Which is the weakest bond?
The
ionic bond
is generally the weakest of the true chemical bonds that bind atoms to atoms.
What does it mean when we say water is adhesive?
Adhesion refers to the
tendency of water molecules to be attracted to other substances
.
What is the attraction between water molecules called?
Water has an amazing ability to adhere (stick) to itself and to other substances. … In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as
a hydrogen bond
.
How many positive and negative charge is there in a water molecule?
Therefore, a water molecule has an equal amount of positive and negative charge which is
1.33×107C
. Note:Water is formed by the sharing of electrons between two hydrogen atoms and one oxygen atom through the formation of a covalent bond.
Is water ionic?
Likewise, a
water molecule is ionic in nature
, but the bond is called covalent, with two hydrogen atoms both situating themselves with their positive charge on one side of the oxygen atom, which has a negative charge.
Which parts of atoms can interact?
Which parts of atoms can interact (react) to form chemical bonds?
valence electrons
; Only the outermost parts of atoms interact (react) with each other, and those are the valence electrons. If the outermost orbital is full, the atom is stable and less likely to react with another atom.
